Subtract 90/32 from 18/10, Solve 1 8/10

Subtract 90/32 from 18/10

1^st number: 1 8/10, 2^nd number: 2 26/32

18/10 - 90/32 is -81/80.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 32 is 160

Next, find the equivalent fraction of both fractional numbers with denominator 160
For the 1st fraction, since 10 × 16 = 160,
18/10 = 18 × 16/10 × 16 = 288/160
Likewise, for the 2nd fraction, since 32 × 5 = 160,
90/32 = 90 × 5/32 × 5 = 450/160
Subtract the two like fractions:
288/160 - 450/160 = 288 - 450/160 = -162/160
After reducing the fraction, the answer is -81/80

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